Liquid-mixing apparatus



A ril- 19 1927.

p E. 'r. CONANT ET AL LIQUID MIXING APPARATUS 2 Sheets-Sheet 1 FiledDec. 1 1924 INVENTOR E .1 Conant l .5. M l1a BY 7 ATTORNEYS mmE. \NIMUSH- WITNESSES .51 T. coNAN'r ET AL 1625592 LIQUID MIXING APPARATUSFiled Dec. 1, 1924 2 Sheets she t z WKTNESSES AL M INVENTOR El ConaniATTORNEYS Patented Apr. 19, 1927.

Uhll'iiili) fiTATiELS ELLSWORTI-I THOMAS CilNAlftl'J. AND LAURENCESOBENSON MGLANE, OF HONOMU',

i TERRITORY OF HAWAII. i

LIQUID-MIXING APPARATUS.

Application filed December 1, 1924. Serial No. 753,401.

Our invention is a lapted to be used for the eilective mixing generallyof two liquids but has. special usefulness as a means for mixing milk oflime with sugar juices, and the invention will be explained in its useas installcdin a raw sugar plant.

A great difficulty is experienced in producing a perfect mixture of limeand sugar juices and it is the general object of our invention toprovide means whereby a perfeet or substantially perfect mixing of thelime and juice is brought about.

A further object ofour invention. is to provide a. device for addinglime to juices or for other purposes in which one of the liquids to bemixed is maintained in a receptacle at a constant level or a nearlyconstant level regardless of slight changes in the rate of feed of theliquid to said vessel, and to'provide for varying the outflow of theliquid from said vessel without aftecting the liquid level in thevessel.

The manner and means whereby the above and other objects as will appearare at-' tained will be readily understood as the description proceeds.Reference is to be had to the accompanying drawings forming a part ofthis speci 'fication, it being understood that the drawings are merelyillustrative of one example of the invention.

Figure 1 is a schematic view of a part of? a sugar plant having ourimproved liming device installed therein;

Figure 2 is a plan View of the liming device;

Figure3 is an elevation of the liming device;

Figure at is a transverse vertical section of the liming device;

Figure 5 is a horizontal section on the line 55, Figure 3.

In Figure 1 the liming device is shown coordinated with parts of a rawsugar plant. In said figure the numeral 10 indicates the mixed juicetank; 11, the outlet pipe from said tank connecting with the suction ofthe mixed juice pump 12, the discharge of which connects by a pipe 112with the juice heater 13, the uices being forced through said heater andpassing by pipes 1a, 15 to settling tanks, not shown. A juice samplingby-pass pipe 16 taps the pipe 1 1 leading to the settling tanks, saidsampling pipe 16 being shown with a shutoff valve 17 and 21 dependingend thereon so that the juice from said sampling pipe may gravitatethrough funnel 18 on the upper end of a pipe 19 leading downwardly intothe mixed juice tank 10. The numeral 20 indicates a tankttor containingmilk of lime and an outlet pipe 21 from said tank 20 leads to thesuction of a lime pump 22,

g the lime being conducted from the pump 22 nects by a flexible pipesection 28 with a.

pipe 29, which pipe 29 connects as at 30 with the outlet pipe 11 fromthe mixed juice tank 10 between said tank 10 and the pump 12. The pipe27 is vertically adjustable, the vertical movement of the pipe beingpermitted by the flexible hose section 28. Adjacent the upper end of thecontainer 25 is an annular overflow channel 31 having a. dischar 'e pipe32leading therefrom, said pipe 32 connecting with pipe 33 having adepending end 34 leading into the milk of lime tank 20. Thus, the limeoverflowing from the container 25 will be caught by the annular channel31 and flow back to the tank 20. At the bottom of container 25 is a.stuliing box 35 through which the pipe 27 passes.

For regulating the flow of the lime through pipe 2'? to hose section 28and pipe 29 to the circulating pipe 11, for causing the lime to mix withthe juices from tank 10, said pipe 27 is formed with an opening oropenings 36 two of which openings are shown in the illustrated examplediametrically opposite. The slot 36 is at the liquid level or top of thecontainer 25 and therefore the flow of the lime through the slots -i llsuitable framework which is shown as a cross loar 39 and supportingposts 10 rising from the bottom of the channel 317 The bar 39 has acentral boss or thickened portion -t-1 internally threaded to engage thethreade of the screw 37 said screw having a vertical cross handle 137 asin Figures 3 and l or a handwheel 237 as in Figure 1.

\Vith the liming device 2? associated with part of the asseinhlae'e inFigure 1,. for example. the pump 12 will draw the mixed juice from thetank 10. force it through the heater 123 and by pipes it. 15 to thesettling; tanks. At the same time the *alve 17 being" open. juice willflow also through the la;- pass pipe 16 and he delivered to the tunnel1S and pipe 19 to finally return to the tank .10. In practice. it isfound that repeated samples taken from the bypass it) show a perfectmixture of the lime and juice. The flow oi the milk of lime will hecaused by pump 22 which d faws the lime from the tank iltl and directsit to pipes 23. 24 to the liraingr device 25 where it Hows contiiniouslvwhen the apparatus is in operation by pipe 95 to the pipe it and juicepump 12 The liming device it will he seen, constitutes a control andregulator for the (tow of the liquid passing to and 'EIOXU saidcontrolling device. The circulation of the will: of lime is continuousthus maintaining an even quality at all, times.

It will he observed that with the provision of the channel to take iareoil' the overflow from the container 2:. it is possible to maintain. avery constant level in the container 25 since any slight: variation inthe feed of the lime to the container 25 will simply result in more orless o't an overflow to the channel 3], the arrangreinent reeultiin in auniform discharge determined by the vertical adjustment of the pipe 2?with its slots 36.

o would state in conclusion that while the illust'ated exampleconstitutes a practure 't'rnm the spirit oi the invention as detined inthe appended claims.

Having; thus deserihed our invention '1 claim:

l. in an apparatus of; the character descriheth a. container having: anopen top to permit the :lree overflow oil? liquid therefrom, means tomaintain a Suppl of liquid to the coi'itainer and. maintain a constantoveriiowi a di1-=charpc pipe 'tironi said container. said diacharp'epipe having a vertically disposed openii and means to vertically adjustthe dismaraa pipe to suhinerg'e more or less o i said opening.

:2. in an a iparatus ot the character def-Itfl'llltith an open topliquid tank. means for supplying? liquid to said tank to maintain aconstant overflow over the top of said tank, a cross head supportedabove the tank, an overflow pipe extending); vin'tically within the tanksaid overflow pipe heine vertically adiustahle and having}; lonritudiinil openings adjacent its upper end. a screw threatfled verticalv through the croashead. and connect;- ing means hetiween the screw andoverflow pipe wherein. said pipe may he adjustahly raised or lowered.

3. A constant head maintaining device comprising an open top tank intowhich the liquid from a discharge pipe may empty, an outlet pipe for theeaid tank extending: upwardly within the tank and having slots adjacent;its upper end. means for adjusting the outlet pipe to arrange the slotsthereo-t in relation to the top ot the associated tank, and means wherehv the liquid [missing over the top oi the said tank inav hel'tllllllltftl to the supply tank.

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